WASET
    Kostas Metaxiotis,  A Mean–Variance–Skewness Portfolio Optimization Model.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2019, vol. 146(2). 85 - 88
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/10010074.